WorksheetsUnit 2 Review
Total questions: 25
Worksheet time: 36mins
Amidst the physiological demands of exercise, the energy requirements of muscle cells skyrocket. These cells must swiftly adapt to this heightened energy demand to maintain peak performance. Among the organelles within muscle cells, some undergo significant changes to ensure a more abundant energy supply.
Which of the following organelles prominently amplifies its activity in muscle cells during exercise, thus becoming the powerhouse for energy production?
Mitochondria
Ribosomes
Nuclei
Golgi Complex
When frog eggs, sourced from a freshwater pond, find themselves immersed in a saltwater aquarium, the intricate interplay of osmotic forces comes into play. In this context, which physiological response is most likely to be observed within the frog eggs over time?
Loss of water from the eggs
Maintenance of equilibrium with no net water movement
Outward diffusion of salt ions from the eggs
. Rupturing of the eggs due to osmotic pressure differences
In the realm of cellular diversity, various entities coexist, each distinct in its own right. Let's delve into a multifaceted question that highlights the unique attributes of plant cells compared to animal cells, viruses, and prokaryotic cells:
Which of the following characteristics is most indicative of plant cells when contrasted with animal cells, viruses, and prokaryotic cells?
Presence of a cell wall primarily composed of cellulose
Lack of a nucleus or membrane-bound organelles
Ability to replicate independently and cause infectious diseases
Predominant occurrence as single-celled organisms
Within the intricate cellular machinery, a vital process involves the transformation of amino acids into proteins. Which specialized organelle plays a central role in orchestrating this complex operation, coupling amino acids together to craft these essential biomolecules? Additionally, how does its location and structure facilitate the precision and efficiency required for this intricate synthesis process?
Ribosome
Endoplasmic Reticulum
Nucleus
Mitochondrion
The cell membrane of a red blood cell permits the passage of water, oxygen, carbon dioxide, and glucose while preventing the entry of most other substances. What term best describes this type of membrane?
Selectively permeable
Osmotically restrictive
Semi-conductive
Impermeable
Which organelle is primarily responsible for the modification, sorting, and packaging of proteins and other substances for storage or secretion?
Golgi apparatus
Endoplasmic Reticulum
Lysosome
Mitochondrion
When presented with a specimen of an active and motile microorganism, which microscope would provide the most effective means for observing the live microbe in detail?
Dissecting Microscope
Transmission Electron Microscope
Confocal Laser Scanning Microscope
Scanning Electron Microscope
x-rays
computers
the light microscope
the scanning electron microscope
Plants have cells but animals do not.
They are both made of one or more cells.
They both come from the same kind of cell.
They both come from a non-living organism.
Cell 2 had a cell membrane and Cell 1 did not.
Cell 1 had a cell wall and Cell 2 did not.
Cell 2 had a chloroplast and Cell 1 did not.
Cell 1 had a nucleus and Cell 2 did not.
The cell theory developed from the work of many different scientists. Which of the following statements is NOT part of the cell theory?
All cells come from other living cells.
The cell is the basic unit of all living things.
All cells of living things have the same organelles.
All living things are made up of one or more cells.
This organelle is a rigid outer layer that protects plant cells.
Cell Membrane
Cell Wall
Nucleus
Chloroplast
This organelle controls what goes in and out of plant and animal cells.
Cell Wall
Cell Membrane
Cytoplasm
Cytoplasm
What structure does this organism use for locomotion (movement)
Match the organelle with its correct function.
Stores and Protects DNA
Builds Proteins
Generates energy for the cell
Controls what enters and leaves the cell
Packages up proteins to be shipped out of the cell
Eukaryotic cells: The difference between plants and animal cells is only plants have
mitochondria
a cell membrane
chloroplast and a cell wall
a nucleus
Which one is the definition of active transport?
movement of particles through the cell membrane from a region of lower concentration to a region of higher concentration using energy in the form of ATP.
passage of water molecules from a region of their higher concentration to a region of their lower concentration through a partially permeable membrane
net movement of molecule from a region of higher concentration to region of lower concentration. Molecule down a concentration gradient
net movement of molecule from a region of lower concentration to region of higher concentration. Molecule down a concentration gradient
Osmosis is specifically.....
diffusion of water molecules through a semi-permeable mebrane from an area of low concentration to an area of high concentration
the diffusion of particles from an area of high concentration to an area of low concentration
diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration
the diffusion of particles from an area of low concentration to an area of high concentration
Students observed cells under the microscope. They observed that the cells had a cell wall, cell membrane, nucleus, and many chloroplasts. Which observation helps students identify the type of cell observed?
The presence of a nucleus means the cells are from a plant.
The presence of a cell membrane means that the cells are from an animal
The presence of chloroplasts means that the cells are from a plant
The presence of a cell wall means that the cells are from an animal
Within the complex machinery of plant and some animal cells, there exists an organelle that performs multifaceted roles, far beyond mere storage. It actively participates in maintaining cell turgor, detoxifying harmful substances, and even plays a part in cellular growth and development. What is the name of this versatile organelle?
Vacuole
Ribosome
Mitochondria
Nucleus
Delving into the intricate world of cellular biology, we encounter channel proteins as remarkable components embedded within the cell membrane. These proteins are tasked with pivotal responsibilities that can significantly impact the cell's functionality.
So, what precisely is the primary, intricate role that channel proteins undertake in the cell membrane's mosaic of functions?
Orchestrating the finely-tuned regulation of ion and molecule passage across the selectively permeable membrane.
Functioning as molecular shuttles, facilitating the transport of lipids across the hydrophobic lipid bilayer.
Enabling cellular adhesion and interactions with neighboring cells, thereby forming tissue structures.
Participating in the intricate process of adenosine triphosphate (ATP) synthesis within cellular powerhouses.
Within the intricate tapestry of biological processes, there exists a fundamental equation that encapsulates a pivotal mechanism essential for life's sustenance:
sunlight + carbon dioxide + water → glucose + water + oxygen
This equation represents the process of photosynthesis, a cornerstone of life on Earth. Photosynthesis is a complex series of chemical reactions that take place in specialized organelles within plant cells. Now, the question arises:
In which organelle does photosynthesis take place, as described by this equation?
Mitochondria
Chloroplasts
Cell membrane
Ribosomes
